Hacksaw.



Uniden srafrns Parana einen.

WILLIAM M. STEBBINS, OF MONTAGUE, MASSACHUSETTS, ASSIGNCR T0 MILLERS FALLS COMPANY, OF MILLERS FALLS, MASSACHUSETTS,` A CORPORATON 0F MASSACHU` SETTS.

HAGKSAW Specification of Letters Patent.

To `all rwhom 'may concern:

a plug 18, having' a sp g catch'19 adafpted Be it known that l, WILLLAM M. S'rnB--' to engage a slot in'--one of the walls o the BINS, of Montague, in the county of Franklin and State of Massachusetts, have invented certain new and useful Improvements in Hacksaws, of which the following is a speciiication.-

This invention has for one'of its obiects to prov de a hacksaw frame adapted to serve as a receptacle or magazine for saw-blades` not in usethe blades being stored-in the frame, -so that a blade. may be withdrawn therefrom and applied. as required, toythe securing and straining devices, which hold the blade in its operative position on the frame.

Another object'of the invention is to pro vide improved means for detachably securing a hacksaw blade to the frame, and straining the same to the desired tension.

The invention consists in the improvements which lwill now proceed to deseribe y eavity.

and claim.

0i the accompanying drawings,lforming a part of this specication,-Figure 1 represents a side elevation of a haoksaw embodying my invention. Fig. 2\represents a section online 2-2, Fig. 1. Fig. 3 represents a longitudinal 'section.v Fig. i represents a section lon linee-.4, Fig. 1. Fig. 5 represents Yav section on line 5-5, Fig. 1; Fig. 6'

represents an' end View. Fig. 7 represents an enlargement of a portion ofFig.- 3, showing a different function oi the nut 36.

The same reference characters indicate thdsame parts in all the yigures.

ln the drawingsf-12 represents the back-r bar or body portion of a substantially U- shaped hacksaw drame. vThe other porn tions of the frame 'are an inner arm 13 rigidly alixed to theJbaok-bar12, and preferably integral therewith, and an outer arm 11i,-

which is preferably adapted to slide on the bar 12, to vary the distance between the two arms, the outer arm having an apertured head 1 5 which surrounds and is adapted to slide' on the bar. with a longitudinal cavity 16 adapted to receive and store one or more saw blades 17, the frame therefore, serving as a magazine for spare blades. The mouth 'of the cavity is at the outer end of the bar 12, and may be provided with asuitable removable obstruction or closure to retain the .blades inlthe l .have here shown for this vpurpose The .bar 12 is providedv 'members 22 and 23, each of which is out away at onevside or' its inner 'end ortion to form -a flat `seat 24 ior'the side o the saw blade, each member having a stud 25 projecting from its ilat seat and preferably inclined thereto as shown in Fig. ,2, the two studsy being oppositely inclined. The studs are adapted to enter holes formed for their reception in the end portions oi' the saw blade. The member 23 has a shoulder 26- which overhangs a ortion ot they seat 2a,- and is in such proximity to the stud 25 that Vit prevents the blade bearing against said vseat from being removed from the stud while the blade is parallel with-the seat, it being necessary to incline the blade relatively 'to the vseat as shown by dotted lines in Fig. 2 before it canbe disengaged from the member 23.

Provision is thus made for preventing the outer end of the blade from leaving the outer member`-23, while the operator is adiusting the innermernberi22 to strain the blade as.

hereinafter: described. The members 22 and and 23 are rotatable the sockets 20 and 21 so 'that the blade may be securedv with its serrated edge, faeirig in different directions, means being employed as hereinafter described for looking the members to the soclrets in different rotative ad`ustr'nents. member 22 issorev/ threa ed, and isA elongated so that it projects considerably beyond the outer side of the inner arrnld.

27 represents a handle adapted to be grasped by the operator' in using the saw, said handle having a 'cavity which receives the outer end .portion of the member 22. A nut'j28 is rigidly aiixed to the handle and engages the thread ot' the member 22. Between the nut and the socket 20 is interposed a me tallie washer 29 which has a enga ement with the member 22 to slide t ereon nt ro- Patentea rei. e, ieee.

The

'thenut and handle,4 'l" e soclret 721 is l vided With equally spaced notches 34 in its outer end, these corres onding in number tate therewith by means of a longitudinal slot formed in the member 22 and a ton ue 31 on the Washer adapted to slide in said s ot. The Washer 29 is provided .with one or 'morelpreferably two) bosses or projections 32 formed to enter notches 33 formed in the outer end of the socket 20, there being preferablyfour notches 33 e ually spaced. Provision is thus made for olding the washers 29, and through the latter the member 22,

against rotation in the socket 20 wheny the said Washer is pressed a ainst the socket by PTOf and arrangement with t e notches 33 in the socket 20 and cooperating yWith studs 35 projecting from the member 23, so that provision i's'vmade for holdinej the member- 23 -against rotation. lt 'Will be seen therefore, that each member is adapted to be turned to .'diiierentpositions to cause the cutting edge of the saW to lace in different directions and to be locked in either of said positions by the tightening of the nut in the handle 27.

, nl/l/"hen a blade is to be applied to the trame,

l the outer arm lll is adjusted to a suitable handle 27 is rotated in the direction required to cause. its nut to draw the member 22 away from the member 23, thus straining the blade. yI When the member 22 has been moved to its bla'de-straining position, it may be locked therein by "a jam-nut 35 engaged with the -member 22 at the inner end of the socket 20, said nut being turnedl against the lend of the socket to lock the member 22.

A The 'nut 36 'may' be utilized las shown in Fig. 7,y to engage the inner end of the sav blade after the latter has been engaged with the stud' 25 on the member 22, one endof the 'nut being cuk ped, so that it overhangs aportion of the ,b ade-seat on the member22, and

. blade, and prevents the blade from-moving `sidewise,away fromits seat.

receives a portion of the inner end of the The nutA` 36 may be moved to the position shown in Fig.y

7, to lock the innerend oi the blade to the inner member, .before the blade is strained.

l claim;A

1. A haclrsaw framecomprising a hollow longitudinal back-bar, open at one end, the width .of the cavity Within said back-bar vbeing greater in one direction than the *Width oi the hacksaw and the length of saidicavity exceeding the len th of tlie haclsavv, `and tvvo. armsl angulary arranged relatively to'- sienes the back-bar, said arms having means for en` gaging and straining a saw-blade, and means lor coniining blades Within said cavity, Whereby the bar is adapted to serve as a mavazine.

2. A hacksavv frame comprising a hollow 'longitudinal back-bar open at its outer end l-tents thereof.

` 3: `A hacksaW frame comprising a hollovv longitudinal back-bar open at its outer end and having a rigidly attached inner arm, an outer arm having a head inclosing and adjustably mounted on said bar, said arms having means for engaging and straining a savvblade, the Width of the cavity Within said back-bar bein greaterin one direction than the Width of t c haclrsaW and the len th of said cavity exceeding the length of the acl(- saW, and a removable closure for the open end of the cavity.

4. A hacksaw frame comprising a longitudinal back-bar having an inner arm and an outer arm, 'each angnlarly arranged relatively to said bar, each arm having a socket, outer and inner saWbladeengaging members ,rotatable lin said sockets, each member having a flat blade-seat and a stud projecting'therefrom, the socket on the outer arm and the `corresponding outer member having means for locking said member at different rotative adjustments, while the inner member is longin ing a longitudinal, adjustment of the inner.'

member, and a Washer interposed'` between said nut and the socket of the linner arm, and enga ed to rotate With and slide on the inner mem er, said Washer and the socket of the inner arm having complemental means'. for

rio

locking the Washer and the inner member at different rotative adjustments.

5. A .haclrsavv trame comprising a lon iL tudinal back-bar having at one end a rigily attached inner arm, an outer arm adjustably mountedon said bar, said arms having lmeans- `ior engaging and 'straining a saw-blade, the

bar having a longitudinal blade-receiving cavity which is openat the outer end of the bar', and a movable stopfor obstructing the open end of said cavity to retain the contents thereof, said stop when in place, serving to prevent the removal of thel adjustable arm "from the back-bar.

'6. A hacksaw frame comprising a longi-v tudinal backbar havin an inner arm and an outer arm, each angular y arranged relatively to said bar, each arm having a socket, outer said members, said shoulder and nut preventand inner saw-blade-enga ing members roing separation'of the blade from the studs tatable in saidsoekets, eac member having A prlor to the straining operation. a Hat blade-seat and a stud projecting there- In testimony whereof I have axed my 5 from,l the outer memberfhalving a siloulder signature, in presence of two witnesses.

over an in aportion o t e seat t ereon, A While thge hier member is screw-threaded VILLIAM M' STEBBINS' and has a look-nut adapted to overhang a Witnesses: portion of the seat on the inner member, and LIZZIE B. STRACHAN,

10 means for straining a saweblade engaged With LENA O. GOFF. 

